Abag contains 5 red marbles and 7 blue marbles. you randomly pick a marble and then pick a second without returning the marbles to the bag. both marbles are red.

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length